Locking mechanism for the hose connecting member for suction cleaners



Sept. 12, 1950 J. VAN DER HEEM 2,522,075

LOCKING MECHANISM FOR THE HOSE CONNECTING MEMBER FOR SUCTION CLEANERS Filed Jan. 12, 1948 3 Sheets-Sheet 1 Sept. 12, 1950 J. VAN DER HEEM 2,522,075

LOCKING MECHANISM FOR THE HOSE CONNECTING MEMBER FOR SUCTION CLEANERS Filed Jan. 12, 1948 3 Sheets-Sheet 2 p 1950 J. VAN DER HEEM 2,522,075

' LOCKING MECHANISM FOR THE HOSE CONNECTING MEMBER FOR SUCTION CLEANERS 3 Sheets-Sheet 3 Filed Jan. 12, 1948 Patented Sept. 12, 1950 an: SFTATESE PAT;

LOCKING MECHANISM FORTTHEHOSEI CONNECTING MEMBER FOR- SUGTION CLEANERS J an: .van der,-;Heem, L'Noorburg, .Netherlands,-. as-

signcmto Van DenHeem N..V.,.1The Hague, Netherlands; a corporation. of the. Netherlands Applic'zttionilanuary '12, 1948;Serial No. 13758 i Inlthei Netherlands March51'2,1194 71 1' movably couplingmf-a: hose .to la suction clcanera 5 Withitheser constructions bothnhands. are to -.be usedfor. fastening-,ascwell as sforiireleasingwthe hoses A- relatively; complicated couplings-tor "1a sue-,1

tion cleanen hoseswhichicanaeasily. :betdamaged,

is known in which for decoupling the hose is pushedeinwardlyilyvithithe one hand, whilst a sleeve mounted on same is displaced outwardly with the othenshandz afterrwhich" the hose is released.

Tlie'invention aims at providing a solid, safeconstruction in which for coupling the hose is pushed into 'the suctio'n cleaner with only one hand and'ithe coupling is effected and fora deercouplipgrmerely a pressure (with aicradle-jsnction;

cleaner by means of the foot),v cm the actuating knob needs to be exerted for releasing the lock and removing the hose.

To this end the construction according to the invention is such that a locking member situated laterally with respect to a guiding sleeve for the connecting member enters under spring pressure into a slit of the guiding sleeve and is pushed outwardly by the conical end of the connecting member against the action of a spring, after 39 which it enters in a concentric groove of the connecting member which, if desired, is pivotable, and locks the same, which locking action can be released by displacing the locking member by an external pressure against the action of a spring.

If it is considered to be objectionable that the cam for actuating the locking member is too remote from the hose connecting member owing to which the hose of the suction cleaner body is to be removed with both hands, the actuating knob 40 of the locking member can be placed so close to the connecting opening of the hose of the suction cleaner that the connecting member of the hose can be embraced with the hand and at the same time the knob can be actuated with the thumb .of

opening in the guiding sleeve of the hose con- 5 necting member, the bell-crank lever being actuated by a part extending outside the hood of the suction cleaner, e. g. a pressure knob or analogous member.

Preferably the part extending through the 56 ICJaimsnQlCI. zeta-.169)" 2 1,; opening of the guiding sleeve is made as apivote able pin. onsleevav Owing-to .this fact this part does not-slide along the. connectingmember. but i therev is a-lrolling friction-.owingto which the con- ,necting lmember. slides :more easily on the guid ing. sleeve. I The bellecrank lever can beactuated against the action of a springs The furthervfeatures of-theinvention will. ap-- pear ;f-rom.the following description-a ing by two embodiments.

Fig. 1' is av-iew-imperspective of a first embodi ment.-.

Fig.2 is asimilarrviewiofa secondtembodiment. Fig; 3 isa longitudinal-section of same,

Fig. +1 is .a. front-view ofsa modified lockingwv mechanism. c

Fig. 5 .is aisection of'a. part of the hood'andthe.

lockingsmechanism.

plate 4 is.-idisplaceablyvimountedeontthe lid It; by means of guiding bolts 2 and slits 3. The displacement takes place by and against the action of a helical spring 5, situated between a bent part 6 of a plate and a bracket 1 fixed to the lid. The plate possesses a double bent part 8 with edge 9 extending into a slit H] of the guiding sleeve II. The plate is provided with an actuating knob l2.

With the embodiment according to Figs. 2 and 3 the plate is replaced by a bracket I3 with rotatable roll I4 (in order to reduce the frictional resistance) and a rocking member I 6 pivotable about the shafts IS. The guiding sleeve II is fixed between the lid and the front hood 2!].

The hose connecting member I! has a conical front end l8 and a circumferential groove I9.

The operation of the mechanism is as follows:

If it is desired to couple the hose to the suction cleaner the connecting member I! is inserted into the sleeve II. The conical part l8 promotes the ready guiding and centering. In proportion to the connecting member entering more, the edge 9 resp. the roll [4 is pushed more out of the sleeve ll against the action of the spring 5, until the edge resp. the roll comes at the place of the groove l9; then the edge resp. the roll jumps into the groove and the device is locked.

The lock can be released when the actuating knob I2 is pushed in (with a cradle suction cleaner for instance by the foot), after which the hose can be pulled loose.

With the embodiment according to Figs. 4 and 5, l is the guiding sleeve for the hose connecting The invention-1 will-be elucidated by the draw I Withttheiembodiment according-:tdFign 1 a member, which is connected between the outer wall 2 and the inner lid 3 of the head. The bell crank lever 4 is made as a bracket which is tiltably supported at 5. The pressure knob 6 extends outside the hood adjacent the hose connecting.

member and is connected to the bracket 4 by means of a pin 1. The pressure knob is fastened to the inner lid 3 by means of a spring 8. The part 9 which extends through the opening in the guiding sleeve l is a pin which at both sides is connected with the bracket 4.

Of course this pin can also rigidly be connected with the bracket. Then it is preferred to provide this pin with rotatable sleeve or bushing.

The bracket l, of course, can also consist of two parts, which then extend inwardly at both sides of the guiding sleeve through openings.

The pressure knob naturally can be made so that it forms a part of the hood and as such possesses an entirely smooth surface with this hood.

I claim:

1. In a locking mechanism for the hose connecting member of suction cleaners, a guiding socket on the suction cleaner, a guiding sleeve on an end of said hose, said guiding sleeve having a conical shaped end thereon, said guiding socket having a transverse slot therein, a looking member movably mounted adjacent said guiding socket, spring means normally urging said locking member into said slot in said guiding socket, means for removing said locking member from said slot against the action of said spring, said guiding sleeve having a groove therein spaced from said conical-shaped end, said conical-shaped end of said guiding sleeve pressing said locking member downwardly against the action of said spring upon insertion in said guiding socket, said locking member being seated in said groove in said guiding sleeve when said sleeve is fully inserted in said socket. 2. In a locking mechanism as claimed in I rotatably mounted on said arms, upwardly extending arms connected to said first named arms, a projection on said upwardly extending arms adapted to extend externally of the body of the suction cleaner and constituting the means for removing said locking member from said slot in said guiding socket against the action of said spring.

4. In a locking mechanism as claimed in claim 1, a hood on said suction cleaner, a bracket tiltably supported above the hose connecting member, said slot in said guiding socket being on the upper side thereof, said locking member being pivotally secured to said tiltably supported bracket, said bracket having an opening therethrough, a pressure knob extending through said opening in said bracket and having an end thereof extending through said hood to the exterior thereof, the other end of said knob being secured to the inner lid of said hood by means of a spring, said knob being connected to said bracket for pivoting said bracket against the action of said spring to remove said locking member from said slot in said guiding socket.

v JAN VAN nan HEEM.

REFERENCES CITED Paquette Feb. 19, 1924 Wahl ,Sept. 25, 1934 Number 

